Wrench



April 16, 1940. I H. WARD 2,197,283

' I WRENCH- Filed July 10, 1939 jwucn for H wry Ward,

Patented Apr. 16, 1940 UNITED STATES PATENT OFFICE WRENCH Henry Ward,McCall, Idaho Application July 10, 1939, Serial No. #83307 1 Claim- (01.81121) This invention relates to wrenches, and more particularly towrenches for use with jack-ham: mer bits, although not so restricted.

Jack-hammer bits, employed in drilling vary in size, covering a range offrom one and one-eighth inches to two and one-half inches; the primaryobject of the invention being to provide a wrench especially adapted foruse with such bits, regardless of size, and which is also useable on mudbits,

having a single cutting edge.

Further, the invention aims to provide a wrench of this type which isreversible, or otherwise stated, is equally applicable from either endthereof, thus facilitating use and eliminating care in application fromone end only, with consequent convenience to the user.

Still further, the invention aims to provide a wrench possessed ofsuperior strength, and

. wherein the jaws contribute to and reinforce the 2o ruggedness of thewrench head.

The invention also aims to provide a simplified wrench structure, andone wherein a more effective engagement thereof with the bit s provided.

' The invention has still further and other objects, which will be laterset forth, and manifested in the course of the following description.

In the drawing: Fig. 1 is a top plan view of the invention, Fig. 2 is asection on line 2-2 of Fig. 1, and

Fig. 3 is a section on line 3-3 of Fig. 1. ,Inproceeding in accordancewith the invention, a handle I is provided with a head 2, preferablyofsquare or box-lilac form, open at each end thereof. The handle and headmay be formed in a single casting, the handle being connected to thehead at one of the corners thereof.

The handle is formed with outwardly flaring portions 3, which merge intothe sides of the head that form the corner, and function to brace,reinforce and strengthen the connection between the handle and head.

The jaws l are preferably formed of steel bars or rods, andhave flatfaces 5, which are rigidly amxed, for example by welding, as indicatedat 6, centraliy'of the width of the sides 2 of the head.

The jaws have similar oppositely tapering faces 1, which latter arecurved or rounded, as depicted in Fig. 1., and also have curvedorrounded ends 9 to facilitate their engagement with the bit B, shown indotted lines as of the jack-hammer type.

The tapering of the faces I, of the jaws is for the purpose of efiectingwedge-like engagement with the parts of the bit B lying between thecutters thereof, as illustrated in Figs. 1 and 2, thus enabling thewrench to be more effectively and conveniently employed, in the instanceof where applied to a bit lying above the wrench, as evidenced by Fig.2. I

The jaws, it will be observed, are similar at each end portion thereof,likewise the opposed open ends or faces of the head, thus providing forapplication of the wrench from either end face thereof.

The tapered portions of the jaws, it will be noted, extend from a pointsubstantially central of the lengths of the jaws outwardly of the head.

Obviously, the entire structure could be made in a single casting, andother changes resorted to without departing from the spirit of theinvention, as set forth in the appended claim.

What is claimed is:

A wrench for use withjack-hammer bits having cutters of cruciformarrangement, composed of a handle, a four sided box-like head connectedto the handle and having similar open ends, and a jaw of bar-like formrigidly secured to the inner face of each of the sides of the head so asto lie in confronting relation to each other,

the jaws having similar end portions and having their extremitiesextending to substantially the open ends of the jaws, whereby to enablethe wrench to be applied to the bits from either of said ends of thewrench, and with the jaws received in the spaces between the cutters,the end portions of the outer faces of the jaws being similarly taperedin a direction from substantially the centers of the lengths of the jawsoutwardly of the head, the faces of the tapered end portions and theextremities of the jaws being rounded.

HENRY WARD.

